The picture of this Male House Sparrow was photographed at the Jamaica Bay Wildlife Refuge in Queens New York. House Sparrows in flocks have a pecking order. Males with larger patches of black tend to be older and dominant over males with less black.
The picture of this Carolina Wren on a fence was photographed at the Forsythe National Wildlife Refuge in New Jersey. Carolina Wrens love to move low through tangled understory; they frequent backyard brush piles and areas choked with vines and bushes.
The picture of this Male House Finch on Branch was taken at the Green-wood Cemetery in Brooklyn New York. The red of a male House Finch comes from pigments contained in its food during molt.
The picture of the American Black Duck in Flight was photographed at the Forsythe National Wildlife Refuge in New Jersey. Look for American Black Ducks in both fresh and saltwater in eastern North America, where they will look like female Mallards except with an olive-yellow bill and overall darker, higher-contrast plumage.
Click on arrow above to hear the sounds of the American Black Duck